Automatic floor-scrubbing machine



APPLICATION man JULY`24, 1919.

Patented Mar. 9, 1920.

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C. STONEY. IIUIOIIIAIIO FLOOR SCHUBBINO MACHINE.

APPLICATION FILED JULY 24, 1919.

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UNITED STATES PATENT oEEioE.

CASIMIR STONEY, F MONTREAL, QUEBEC, CANADA.

AUTOMATIC FLO0RSCRUBBING MACHINE.

Application filed uly 24, 1919. Serial No 312,949.

. To all rwhom it may concern:

by the water used inthe scrubbing operation is prevented from flowing laterally from the machine during its operation.

A still further object is to provide means whereby clean water is automatically supplied in proper quantities without volition on part of the operator, theused water being recovered and retained within a tank carried by the apparatus. g

These andy other likefobjects are attained bythe novel construction and combination of parts hereinafter described and-shown in the accompanying drawings, forming a inaterial part of this disclosure.,` audiii vwhich Figure 1 is a side elevationaliyii-ew showing a scrubbing machineimadewiii* accord,

ance with the invention, portions being broken away in order to disclose the relation of parts used therein, and

Fig. 2 is a to plan view of the same, parts also being bro ien away in order to disclose the interior construction.

liieferringy to the drawings in detail, the' numeral 10 designates a pair of side frames,

respectively right and left, these frames supporting at ltheir top, near the center, a circular monitor casing 11, containing an electric motor having a transversely extending shaft 12.

A T shaped operating handle 13 is provided with an electrical switch 14 by which the electrical current is controlled to the motor, the handle extending across the end of a bar 15, merging into forks 16 which are pivoted upon a shaft 17, passing transversely in the frame 10.

Carried on the frame, at the front endof the mechanism, is a supply tank having" a removable cover 19 through which fresh Specification of Letters Patent. 4

Patented Mar. 9, 1920.

water may be supplied, while at the opposite end of the machine is another tank 20, having a perfoiate cover '21, the tank being.

adapted to lreceive. the refuse water, as will ybe further on described.

Fixed upon one end of the shaft 12 is a bevel gear 22, driving a pinionA 23 on the end of a diagonally disposed shaft 24, havfing on its lower end another bevel pinion25,

meshing with a bevel gear 26, mounted on a shaft 27], extending transversely through the machine, the gear 26 communicating rotary motion to a pinion 28, on another diagonally disposed vshaft 29, having at its lower end a bevel pinion 30, driving a bevel gear 31, on the end of a shaft 32, extending transversely through the frame at the lower front portion thereof, and on which is mounted a cylindrical sweeping brush 33 adapted to re move loose accumulations from the floor.

Fixed upon the diagonal shaft 29 is. a

wormv 34, c

riving 4a .gear 1 35, mountedV on"A a" shaft 36,!'and scnil'ed to'the back side of the gear 35 is an eccentric 37 encircled by an eccentric ring 38 from which extends a stem 39, in a bearing pivote/d on the frame, its upper end making Contact with a clapper valve 40, controlling the opening 41 leading from th 'i tank 18 downward at its lower portion so that when the valve 40 is raised clean wateris permitted to pass out.

Another worm 42 is secured upon the shaft r29, meshing with a gear 34, fixed upon a transverse shaft del, a similar shaft 45 being at the rear end of the machine, these .shafts lcarrying rollers over which are'- trained endless wipers or mops 45, arranged to present a relatively narrow edge upon the `surface seas to prevent the water from running sidewise on the floor from betweenl the frame "sides, and in order to hold the endless wipers 46 downward upon the surface of the floor, a plurality of rollers 47 are mounted in arms48, pivoted at their upper ends in the frame 10.

Secured on the shaft 27 is a sprocket 49.

over which is trained a chain 50, ruiming over another sprocket 51, mounted on a stub shaft 52 near the rear of the machine, alongv side of which is a spur pinion 53, engaging with a gear 54, fixed on a Shaft 55, mounted transversely in the frame.

Fixed upon the shaft 27, 'between the frame sides is a relatively large cylindrical brush 5G, "rotatable in a counter clock-wise direction, While a similar' cylindrical brush 5T is secured upon the shaft which ob-v viously by the intermediate gearing is caused to rotate in an opposite direction.

Secured upon the shaft 12 is a gear 58 adapted to drive a worm 59, fixed upon a, vertical spindle GO, the spindle having on its lower end the vanes of a rotary pump 6l i111- mediately below the housingll and from which broadened to extend from side to side oi the machine, and is held closely adjacent to a wiper element (34 resting upon the floor surface, the suction head (S3 extending` conipletely across the aliparatus, so as to gather up any zuzcumulation o't' water which is conveyed upward and eventually into the used water tank 20.

A soap reservoir b5 is arranged at the front of the apparatus, the same having a narrowed inner portion in which rotates a cylindrical brushlli centered on the revolvincr shat't 3G, so that soap in a cake or in powdered form may be dispensed in the path ol water from the tank 18 when the clapper valve '-10 is raised. l

The mounting of the tanks 1S and 20 are such that they may be disassociated 'trom the trame at any desired time, as for cleansinn or other purposes, and the elec-tric eurrent supplied from any convenient source.

In operation. the parts having been assembled as indicated and the supply tank 18 filled with clean water, the )machine is advanced over the surface to be cleansed, whereupon the brush Q3 gathers the larger particles, prior to the wetting of the surface, which is accomplished automatically by intermittently raising the valve l() through the cam or eccentric employed, delivering a stream ot' water in advance ot' the distributinglates (35 at the front of the machine, the scruibing being principally acconiplished by the revolving brush 56, alter which the 1 ,assess excess of water is removed by the rotajry pump from the floor, which is finally polished andcleansed by the brush 5,7, the wiping elements 46 preventing the water from spreading beyond the path of the machine upon the floor.

' Having thus described my invention what I claim as new and desire to secure'by Letters Patent, is-

1. In an automatic floor scrubbing ma'- chine, the combination with a pair of side frames, and a supply tank arranged at the front-ot said machine, of a motor mounted `centrally on said frame, a sweeping brush, a scrubbing brush, means for automatically dispensing waterin advance of said scrubbing brush from said supply tank, a wiping brush, said scrubbing' and wiping;` brushes being rotated in opposite directions, and means for retaining water between the frames of said machine.

2. In a floor cleaningmachine, the combination with a pair ot' side frames, a supply and receiving tank removably engaged respectively at the front and rear of said frame, an electric motor carried on said trame, and means for propelling said apparatus, a sweeping brush at the front of said trame, a rotary scrubbing brush, a valve in said supply tank adapted to be operated,

tor automatically dispensing? water in advance'ot said scrubbingl brush, suction means in said frame for gatheringup any accumulation ot water, a wiping brush rotated (')ppositely` toA said scrubbing` brush, and a pair ot' endless travelingwipers arranged at, the sides'ot' the frame adapted to prevent the passage ol water therebetween.

In testimony whereof I have affixed my signature.

CASIMIR STONEY. 

